html {
  overflow: hidden;
  height: 100%;
}

body {
  font-family: 'Aldrich';
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
  background: radial-gradient(circle at 20% 20%, #1b2a3a 0%, #0a0f14 45%, #05070a 100%);
  color: #e6f1ff;
  display: flex;
  flex-direction: column;
}

div {
  margin: 0;
  padding: 0;
}

h1 {
  background: linear-gradient(120deg, #0f1720 0%, #0c1b2b 40%, #071018 100%);
  color: #dff6ff;
  margin: 0px;
  padding: 8px 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

#project-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px 12px;
  background: linear-gradient(135deg, rgba(10, 18, 26, 0.98) 0%, rgba(8, 12, 18, 0.98) 100%);
  border-bottom: 1px solid rgba(0, 210, 210, 0.25);
  box-shadow: inset 0 0 0 1px rgba(0, 210, 210, 0.08);
  border-radius: 14px;
}

#app-shell {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  padding: 12px 16px 16px;
  touch-action: none; /* Prevent default browser touch actions for the whole app shell */
}

#floorplan-3d, #floorplanner-canvas {
  touch-action: none; /* Specifically disable for canvas elements */
}

/* Enhanced 3D Viewer Styling */
#floorplan-3d {
  background: linear-gradient(135deg, #0a0f14 0%, #1a1f2e 50%, #0f141f 100%);
  box-shadow: 
    inset 0 0 60px rgba(0, 210, 210, 0.05),
    0 0 40px rgba(0, 210, 210, 0.1);
  border-radius: 14px;
  overflow: hidden;
  position: relative;
}

#floorplan-3d::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(0, 210, 210, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(95, 255, 234, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

#floorplan-3d canvas {
  box-shadow: 0 0 30px rgba(0, 210, 210, 0.15);
}

#side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  position: relative;
  overflow-y: auto;
  padding-right: 6px;
  scrollbar-color: rgba(90, 240, 230, 0.6) rgba(10, 18, 26, 0.8);
  scrollbar-width: thin;
}

#main-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
}

#tool-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: visible;
  padding-bottom: 16px;
  flex: 1;
  min-height: 0;
}

.rail-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(7, 12, 18, 0.7);
  border: 1px solid rgba(0, 210, 210, 0.2);
  border-radius: 12px;
  padding: 8px 10px 10px;
}

.rail-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(205, 234, 248, 0.9);
  padding: 4px 6px;
  background: linear-gradient(120deg, rgba(9, 16, 24, 0.95), rgba(7, 12, 18, 0.95));
  border-radius: 8px;
  border: 1px solid rgba(0, 210, 210, 0.2);
}

.rail-section summary {
  cursor: pointer;
  list-style: none;
}

.rail-section summary::-webkit-details-marker {
  display: none;
}

.rail-section summary::after {
  content: "▾";
  float: right;
  color: rgba(150, 210, 230, 0.7);
}

.rail-section[open] summary::after {
  content: "▴";
}

#side-panel::-webkit-scrollbar {
  width: 8px;
}

#side-panel::-webkit-scrollbar-track {
  background: rgba(8, 14, 20, 0.8);
  border-radius: 999px;
}

#side-panel::-webkit-scrollbar-thumb {
  background: rgba(95, 255, 234, 0.5);
  border-radius: 999px;
  border: 2px solid rgba(8, 14, 20, 0.9);
}

#planner-stage {
  position: relative;
  min-height: 0;
  border: 1px solid rgba(0, 210, 210, 0.2);
  border-radius: 14px;
  background: rgba(6, 10, 14, 0.65);
  box-shadow: inset 0 0 0 1px rgba(0, 210, 210, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  flex: 1;
}


.project-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.project-field {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.project-field label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(214, 238, 255, 0.8);
}

.project-field input,
.project-notes textarea {
  border: 1px solid rgba(0, 210, 210, 0.35);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 11px;
  background: rgba(8, 14, 20, 0.9);
  color: #e8f8ff;
  box-shadow: 0 0 0 1px rgba(0, 210, 210, 0.15);
}

.project-field input::placeholder,
.project-notes textarea::placeholder {
  color: rgba(180, 212, 232, 0.65);
}

.project-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: stretch;
}

.project-select {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  align-items: stretch;
}

.project-select label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(214, 238, 255, 0.7);
}

#projectList {
  width: 100%;
  max-width: none;
  border-radius: 6px;
  border: 1px solid rgba(0, 210, 210, 0.35);
  background: rgba(8, 14, 20, 0.9);
  color: #e8f8ff;
  padding: 5px 8px;
  font-size: 11px;
}

.project-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

#autosaveStatus {
  align-self: flex-start;
  font-size: 10px;
  color: #0a1f21;
  background: linear-gradient(120deg, #9fffe8 0%, #5fffea 50%, #67cfff 100%);
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(95, 255, 234, 0.6);
  box-shadow: 0 0 12px rgba(95, 255, 234, 0.35);
}

.project-notes {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.project-notes label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(214, 238, 255, 0.8);
}

.project-notes textarea {
  resize: vertical;
  min-height: 60px;
}

h2 {
  font-size: 19px;
  font-style: italic;
  margin: 0px;
  padding: 5px 30px;
  color: #d9fbff;
}
h3 {
  font-size: 12px;
  font-weight: bold;
  margin: 0px;
  padding: 5px 30px;
  color: rgba(220, 242, 255, 0.75);
}

ul{
  font-size: 12px;
  color: rgba(215, 236, 255, 0.75);
}
button {
  padding: 10;
}

.btn.btn-default {
  background: rgba(12, 20, 28, 0.95);
  color: #e6f6ff;
  border: 1px solid rgba(0, 210, 210, 0.4);
  box-shadow: 0 0 10px rgba(0, 210, 210, 0.18);
  border-radius: 12px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 210, 210, 0.3);
}

.btn.btn-default:hover,
.btn.btn-default:focus,
.btn.btn-default:active {
  background: rgba(12, 30, 36, 0.95);
  color: #ffffff;
  border-color: rgba(120, 255, 238, 0.8);
}

#switch-viewer {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#camera-controls {
  float: left;
}

.tips-popup {
  position: absolute;
  left: 0;
  right: 0;
  top: 140px;
  padding: 0 8px;
  display: none;
  z-index: 30;
}

.tips-popup.is-visible {
  display: block;
}

.tips-panel {
  background: rgba(8, 14, 20, 0.96);
  border: 1px solid rgba(0, 210, 210, 0.25);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
  padding: 12px 14px 14px;
  max-height: 70vh;
  overflow: auto;
}

.tips-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tips-header h2 {
  padding: 0;
  font-size: 16px;
}

.tips-close {
  background: transparent;
  border: 1px solid rgba(0, 210, 210, 0.35);
  color: #9fffe8;
  border-radius: 999px;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.tips-close:hover,
.tips-close:focus {
  background: rgba(12, 30, 36, 0.95);
  color: #ffffff;
}

#floorplanner, #viewer {
  position: absolute;
  inset: 0;
}

#floorplanner-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}

#main-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}

.tool-panel {
  background: rgba(8, 14, 20, 0.94);
  border: 1px solid rgba(0, 210, 210, 0.25);
  border-radius: 12px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.45);
  padding: 12px;
}

.tool-panel .btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 8px 10px;
  font-size: 11px;
}

.tool-panel .btn .glyphicon {
  font-size: 14px;
}

.tool-text {
  font-size: 11px;
}

#planner-stage .card {
  position: relative;
  flex: 1;
  min-height: 420px;
}

#floorplanner-canvas,
#three-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.inventory-content {
  max-height: 60vh;
  overflow-y: scroll;
}

.modal {
  overflow: auto;
  z-index: 5000;
  position: fixed;
}

.modal-backdrop {
  z-index: 4500;
}

.modal-dialog {
  margin: 40px auto;
  max-width: 920px;
}

.modal-body {
  max-height: 70vh;
  overflow-y: auto;
}

.docked-modal {
  padding-right: 0 !important;
}

.docked-modal .modal-dialog {
  position: fixed;
  right: 12px;
  top: 220px;
  bottom: 12px;
  width: 320px;
  margin: 0;
  transform: none !important;
}

.docked-modal .modal-content {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.docked-modal .modal-body {
  flex: 1;
  max-height: none;
}

@media (max-width: 1100px) {
  #app-shell {
    grid-template-columns: 1fr;
  }

  .project-fields {
    grid-template-columns: 1fr;
  }

  .project-buttons {
    grid-template-columns: 1fr 1fr;
  }

  .docked-modal .modal-dialog {
    width: 380px;
  }
}

@media (max-width: 900px) {
  #tool-rail {
    flex-direction: row;
    flex-wrap: wrap;
  }

  #planner-stage .card {
    min-height: 260px;
  }

  .docked-modal .modal-dialog {
    position: fixed;
    right: 8px;
    top: 180px;
    bottom: 8px;
    width: calc(100% - 16px);
  }
}

.panel,
.modal-content {
  background: #0b141d;
  color: #e6f6ff;
  border: 1px solid rgba(0, 210, 210, 0.2);
}

.panel-heading,
.modal-header,
.modal-footer {
  background: rgba(9, 16, 24, 0.95);
  color: #c9f3ff;
  border-color: rgba(0, 210, 210, 0.2);
}

.panel-title a {
  color: #9fffe8;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  width: 100%;
  transition: all 0.2s ease;
}

.panel-title a:hover {
  color: #ffffff;
  padding-left: 5px;
  text-decoration: none;
}

.panel-heading {
  transition: background 0.3s ease;
}

.panel-heading:hover {
  background: rgba(0, 210, 210, 0.15) !important;
}

.wall-label-editor {
  position: absolute;
  z-index: 40;
  font-family: "Aldrich", sans-serif;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px solid rgba(0, 210, 210, 0.45);
  background: rgba(8, 14, 20, 0.95);
  color: #e8f8ff;
  box-shadow: 0 0 14px rgba(0, 210, 210, 0.2);
}

.wall-label-editor:focus {
  outline: none;
  border-color: rgba(95, 255, 234, 0.9);
  box-shadow: 0 0 18px rgba(95, 255, 234, 0.35);
}

.dg {
  font: 11px/1.2 "Aldrich", sans-serif;
  text-shadow: none;
}

.dg.main {
  background: rgba(8, 14, 20, 0.95);
  border: 1px solid rgba(0, 210, 210, 0.25);
  box-shadow: inset 0 0 0 1px rgba(0, 210, 210, 0.08), 0 12px 30px rgba(0, 0, 0, 0.4);
  border-radius: 12px;
  overflow: hidden;
}

.dg .title {
  background: linear-gradient(120deg, rgba(12, 18, 26, 0.95), rgba(7, 14, 20, 0.95));
  color: #c9f3ff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(0, 210, 210, 0.2);
}

.dg .cr {
  border-left: 1px solid rgba(0, 210, 210, 0.08);
  border-bottom: 1px solid rgba(0, 210, 210, 0.08);
}

.dg .property-name {
  color: rgba(210, 238, 255, 0.85);
}

.dg .c input[type="text"],
.dg .c input[type="number"],
.dg .c select {
  background: rgba(8, 14, 20, 0.9);
  color: #e8f8ff;
  border: 1px solid rgba(0, 210, 210, 0.3);
  border-radius: 6px;
  padding: 2px 6px;
  box-shadow: inset 0 0 0 1px rgba(0, 210, 210, 0.1);
}

.dg .c input[type="checkbox"] {
  accent-color: #5fffea;
}

.dg .slider {
  background: rgba(10, 18, 26, 0.8);
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(0, 210, 210, 0.2);
}

.dg .slider-fg {
  background: linear-gradient(120deg, #5fffea 0%, #57d0ff 100%);
}

.dg select {
  color: #e8f8ff;
}


/* --- High Resolution Item Catalog Overhaul --- */
.inventory-content {
    background: #080e14 !important;
    padding: 20px !important;
    border-radius: 4px;
    height: 100%;
}

/* Force Grid layout for item wrappers to prevent squashing */
#floor-items-wrapper,
#wall-items-wrapper,
#in-wall-items-wrapper {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)) !important;
    gap: 20px !important;
    padding: 10px !important;
    width: 100% !important;
}

/* Remove Bootstrap chars that break Grid */
.inventory-content .row::before, 
.inventory-content .row::after {
    display: none !important;
}

.inventory-content [class*="col-"] {
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    float: none !important;
}

.inventory-content .thumbnail.add-item {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid rgba(0, 210, 210, 0.1) !important;
    border-radius: 12px;
    padding: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-align: center;
    box-shadow: none;
    text-decoration: none !important;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    min-height: 200px;
}

.inventory-content .thumbnail.add-item:hover {
    border-color: rgba(0, 210, 210, 0.5) !important;
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    background: rgba(0, 210, 210, 0.05) !important;
}

.inventory-content .thumbnail.add-item .thumb-container {
    width: 100%;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    background: rgba(0, 0, 0, 0.2) !important;
    border-radius: 8px;
    overflow: hidden;
}

.inventory-content .thumbnail.add-item img {
    width: auto;
    height: auto;
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.3)) url(#remove-white);
    transition: transform 0.5s ease;
}

.inventory-content .thumbnail.add-item:hover img {
    transform: scale(1.1);
}

.inventory-content .thumbnail.add-item h3 {
    color: #e6f6ff !important;
    font-family: 'Aldrich', sans-serif !important;
    font-size: 14px !important;
    font-weight: 400 !important;
    margin: 5px 0 0 !important;
    letter-spacing: 0.04em;
    text-transform: capitalize;
}

/* --- Modern Floating Controls Overhaul --- */
#gui-container {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 400px;
    max-height: 85vh;
    background: rgba(15, 25, 35, 0.7);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 210, 210, 0.3);
    border-radius: 16px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    z-index: 10001;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#gui-container.collapsed {
    max-height: 48px;
}

#gui-container.collapsed #gui-content {
    visibility: hidden;
    opacity: 0;
}

.gui-header {
    background: linear-gradient(90deg, rgba(0, 210, 210, 0.15), transparent);
    padding: 12px 20px;
    cursor: pointer;
    border-bottom: 1px solid rgba(0, 210, 210, 0.2);
    display: flex;
    align-items: center;
    gap: 12px;
    user-select: none;
    touch-action: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: rgba(0, 210, 210, 0.3);
}

.gui-header .dot {
    width: 10px;
    height: 10px;
    background: #5fffea;
    border-radius: 50%;
    box-shadow: 0 0 10px #5fffea;
}

.gui-header .title {
    font-family: 'Aldrich', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: #5fffea;
    letter-spacing: 2px;
    text-transform: uppercase;
    flex: 1;
}

/* Add an arrow indicator for collapse status */
.gui-header::after {
    content: '▾';
    color: #5fffea;
    font-size: 18px;
    transition: transform 0.3s ease;
}

#gui-container.collapsed .gui-header::after {
    transform: rotate(-90deg);
}

#gui-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    transition: opacity 0.2s ease;
}

.gui-header:hover {
    background: linear-gradient(90deg, rgba(0, 210, 210, 0.25), rgba(0, 210, 210, 0.05));
}

/* dat.GUI Modern Overrides */
.dg.main {
    width: 100% !important;
    color: #e0faff !important;
}

.dg .cr {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    height: auto !important;
    min-height: 48px !important;
    background: transparent !important;
    border-bottom: 1px solid rgba(0, 210, 210, 0.1) !important;
    padding: 0 !important;
    margin: 0 !important;
}

.dg .property-name {
    flex: 1 !important;
    min-width: 0;
    padding: 0 15px !important;
    font-size: 13px !important;
    color: #e0faff !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: clip !important;
    line-height: 1.2 !important;
    display: flex !important;
    align-items: center !important;
}

.dg .c {
    flex: 0 0 120px !important;
    width: 120px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    padding-right: 15px !important;
}

/* Add custom class for catalog items to work with Grid */
.catalog-item-card {
    display: block;
    height: 100%;
}

.catalog-item-card .thumbnail {
    height: 100%;
    margin-bottom: 0 !important;
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid rgba(0, 210, 210, 0.2) !important;
    transition: all 0.3s ease;
}

.catalog-item-card .thumbnail:hover {
    background: rgba(0, 210, 210, 0.08) !important;
    border-color: rgba(95, 255, 234, 0.5) !important;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

/* Modal sizing for catalog */
#add-items-modal .modal-dialog {
    width: 90% !important;
    max-width: 1200px !important;
}

/* Input Fields */
.dg input[type="text"], 
.dg input[type="number"],
.dg select {
    background: rgba(0, 0, 0, 0.5) !important;
    border: 1px solid rgba(0, 210, 210, 0.3) !important;
    border-radius: 6px !important;
    color: #fff !important;
    padding: 4px 8px !important;
    height: 28px !important;
    font-size: 12px !important;
    width: 100% !important;
}

/* Sliders */
.dg .slider {
    background: rgba(255, 255, 255, 0.1) !important;
    height: 8px !important;
    border-radius: 4px !important;
    margin: 0 10px !important;
    flex: 1 !important;
}

.dg .slider-fg {
    background: linear-gradient(90deg, #5fffea, #31ad9c) !important;
}

/* Folders */
.dg .folder .title {
    background: rgba(0, 210, 210, 0.1) !important;
    color: #fff !important;
    padding: 12px 15px !important;
    font-size: 12px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    border-bottom: 1px solid rgba(0, 210, 210, 0.2) !important;
}

.dg li {
    background: transparent !important;
    height: auto !important;
}

/* Modern Checkbox */
.dg .c input[type="checkbox"] {
    width: 20px !important;
    height: 20px !important;
    appearance: none;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(0, 210, 210, 0.4);
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    margin: 0 !important;
}

.dg .c input[type="checkbox"]:checked {
    background: #5fffea;
}

.dg .c input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: #080e14;
    font-weight: bold;
}

.dg .close-button {
    display: none !important;
}


/* Shine effect for catalog thumbnails */
.inventory-content .thumbnail.add-item::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.05),
        transparent
    );
    transform: rotate(45deg);
    transition: 0.5s;
    pointer-events: none;
}

.inventory-content .thumbnail.add-item:hover::after {
    top: 50%;
    left: 50%;
}

/* Ensure the modal content is dark and modern */
.docked-modal .modal-content {
    background: #0d151d !important;
    border: 1px solid rgba(0, 210, 210, 0.3) !important;
    color: #e6f1ff !important;
    border-radius: 16px !important;
}

.docked-modal .modal-header {
    border-bottom: 1px solid rgba(0, 210, 210, 0.2) !important;
}

.docked-modal .modal-title {
    color: #5fffea !important;
    font-family: 'Aldrich', sans-serif !important;
    letter-spacing: 1px;
}

.docked-modal .panel-default {
    background: transparent !important;
    border: none !important;
}

.docked-modal .panel-heading {
    background: rgba(0, 210, 210, 0.1) !important;
    border: 1px solid rgba(0, 210, 210, 0.2) !important;
    border-radius: 8px !important;
    margin-bottom: 10px !important;
}

.docked-modal .panel-title a {
    color: #9fffe8 !important;
    font-weight: bold !important;
    text-decoration: none !important;
}


/* --- FINAL UI PERFECTION OVERRIDES --- */

/* Force Wide Grid for Catalog */
#floor-items-wrapper,
#wall-items-wrapper,
#in-wall-items-wrapper {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)) !important;
    gap: 25px !important;
    padding: 20px !important;
    width: 100% !important;
    margin: 0 !important;
}

/* Catalog Card High-End Styling - Optimized for Transparency */
.catalog-item-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.catalog-item-card .thumbnail {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    border: 1px solid rgba(0, 210, 210, 0.1) !important;
    background: rgba(255, 255, 255, 0.02) !important;
    border-radius: 12px !important;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none !important;
    box-shadow: none;
}

.catalog-item-card .thumbnail:hover {
    border-color: #5fffea !important;
    background: rgba(0, 210, 210, 0.05) !important;
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 20px rgba(95, 255, 234, 0.15);
}

.catalog-item-card .thumb-container {
    width: 100%;
    height: 180px;
    background: rgba(0, 0, 0, 0.1) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    border-bottom: 1px solid rgba(0, 210, 210, 0.05);
}

.catalog-item-card .thumb-container img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.3)) url(#remove-white);
}

.catalog-item-card .caption {
    padding: 12px !important;
    background: transparent !important;
}

.catalog-item-card .caption h3 {
    margin: 0 !important;
    font-size: 14px !important;
    color: #5fffea !important;
    font-family: 'Aldrich', sans-serif !important;
    letter-spacing: 1px !important;
    font-weight: 400 !important;
    text-transform: uppercase;
}

/* Premium Branding */
.premium-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ffd700 0%, #ffa500 100%);
    color: #000;
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 800;
    border-radius: 4px;
    letter-spacing: 1px;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(255, 215, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

  .door-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: linear-gradient(135deg, rgba(0, 210, 210, 0.95) 0%, rgba(0, 120, 190, 0.95) 100%);
    color: #001216;
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 800;
    border-radius: 4px;
    letter-spacing: 0.8px;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(0, 210, 210, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.25);
  }

.premium-card .thumbnail {
    border: 1px solid rgba(255, 215, 0, 0.3) !important;
}

.premium-card:hover .thumbnail {
    border-color: #ffd700 !important;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.2) !important;
}

/* Modal Perfection - Insert Items */
#add-items-modal .modal-dialog {
    width: 450px !important;
    max-width: 90vw !important;
    max-height: 85vh !important;
    margin: 20px auto !important;
    position: fixed !important;
    right: 20px !important;
    left: auto !important;
    top: 100px !important;
    bottom: 20px !important;
    display: flex !important;
    flex-direction: column !important;
}

#add-items-modal .modal-content {
    background: linear-gradient(135deg, rgba(10, 18, 26, 0.98), rgba(8, 12, 18, 0.98)) !important;
    backdrop-filter: blur(20px) !important;
    border-radius: 16px !important;
    border: 1px solid rgba(0, 210, 210, 0.3) !important;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6), 0 0 60px rgba(0, 210, 210, 0.15) !important;
    display: flex !important;
    flex-direction: column !important;
    max-height: 100% !important;
    overflow: hidden !important;
}

#add-items-modal .modal-header {
    flex: 0 0 auto !important;
    max-height: 180px !important;
    overflow-y: auto !important;
    border-bottom: 1px solid rgba(0, 210, 210, 0.25) !important;
    background: linear-gradient(135deg, rgba(0, 210, 210, 0.1), transparent) !important;
}

#add-items-modal .modal-title {
    color: #5fffea !important;
    font-size: 18px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
    margin: 0 !important;
}

#add-items-modal .modal-body {
    flex: 1 1 auto !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    padding: 0 !important;
    min-height: 0 !important;
}

/* Custom scrollbar for modal */
#add-items-modal .modal-body::-webkit-scrollbar {
    width: 8px !important;
}

#add-items-modal .modal-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3) !important;
    border-radius: 4px !important;
}

#add-items-modal .modal-body::-webkit-scrollbar-thumb {
    background: rgba(0, 210, 210, 0.5) !important;
    border-radius: 4px !important;
}

#add-items-modal .modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 210, 210, 0.8) !important;
}

/* Search and filter improvements */
#catalog-search {
    background: rgba(0, 0, 0, 0.4) !important;
    border: 1px solid rgba(0, 210, 210, 0.3) !important;
    color: #e8f8ff !important;
    border-radius: 8px !important;
    padding: 10px 14px !important;
    font-size: 13px !important;
    margin-bottom: 10px !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

#catalog-search::placeholder {
    color: rgba(232, 248, 255, 0.5) !important;
}

#catalog-search:focus {
    outline: none !important;
    border-color: #5fffea !important;
    box-shadow: 0 0 15px rgba(0, 210, 210, 0.3) !important;
}

/* Filter buttons */
#add-items-modal .btn-group {
    display: flex !important;
    gap: 6px !important;
    width: 100% !important;
}

#add-items-modal .catalog-filter-btn {
    flex: 1 !important;
    background: rgba(0, 0, 0, 0.4) !important;
    border: 1px solid rgba(0, 210, 210, 0.25) !important;
    color: #9fd0e6 !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
    padding: 8px 6px !important;
    border-radius: 6px !important;
    transition: all 0.3s ease !important;
}

#add-items-modal .catalog-filter-btn:hover {
    background: rgba(0, 210, 210, 0.15) !important;
    border-color: rgba(0, 210, 210, 0.5) !important;
    color: #e8f8ff !important;
}

#add-items-modal .catalog-filter-btn.active {
    background: linear-gradient(135deg, rgba(0, 210, 210, 0.3), rgba(95, 255, 234, 0.2)) !important;
    border-color: #5fffea !important;
    color: #5fffea !important;
    box-shadow: 0 0 15px rgba(0, 210, 210, 0.3) !important;
}

/* Panel styling */
#add-items .panel {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    margin-bottom: 0 !important;
}

#add-items .panel-heading {
    background: linear-gradient(135deg, rgba(0, 210, 210, 0.15), transparent) !important;
    border: none !important;
    border-bottom: 1px solid rgba(0, 210, 210, 0.2) !important;
    padding: 12px 16px !important;
}

#add-items .panel-title a {
    color: #5fffea !important;
    font-size: 14px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.8px !important;
    text-decoration: none !important;
    display: block !important;
}

#add-items .panel-title a:hover {
    color: #9ffff8 !important;
}

#add-items .panel-body {
    padding: 12px !important;
    background: rgba(0, 0, 0, 0.2) !important;
}

/* Item grid - optimized for narrower modal */
#floor-items-wrapper,
#wall-items-wrapper,
#in-wall-items-wrapper {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
    padding: 12px !important;
    width: 100% !important;
    margin: 0 !important;
}

/* Item cards */
.catalog-item-card {
    display: block !important;
    height: 100% !important;
}

.catalog-item-card .thumbnail {
    height: 100% !important;
    margin-bottom: 0 !important;
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(0, 210, 210, 0.2) !important;
    border-radius: 10px !important;
    padding: 10px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: flex !important;
    flex-direction: column !important;
}

.catalog-item-card .thumbnail:hover {
    background: rgba(0, 210, 210, 0.1) !important;
    border-color: #5fffea !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 20px rgba(0, 210, 210, 0.25) !important;
}

.catalog-item-card .thumb-container {
    width: 100% !important;
    height: 100px !important;
    background: rgba(0, 0, 0, 0.3) !important;
    border-radius: 6px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-bottom: 8px !important;
    overflow: hidden !important;
}

.catalog-item-card .thumb-container img {
    max-width: 90% !important;
    max-height: 90% !important;
    object-fit: contain !important;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3)) !important;
}

.catalog-item-card .caption {
    padding: 0 !important;
    text-align: center !important;
}

.catalog-item-card .caption h3 {
    color: #e8f8ff !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    margin: 0 !important;
    text-transform: capitalize !important;
    line-height: 1.3 !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
}

/* No results message */
#catalog-no-results {
    background: rgba(255, 68, 68, 0.1) !important;
    border: 1px solid rgba(255, 68, 68, 0.3) !important;
    border-radius: 8px !important;
    color: #ff9999 !important;
    font-size: 13px !important;
    padding: 20px !important;
    text-align: center !important;
    margin: 12px !important;
}

/* Close button */
#add-items-modal .close {
    color: #9fd0e6 !important;
    text-shadow: none !important;
    opacity: 0.7 !important;
    font-size: 24px !important;
    font-weight: 300 !important;
    transition: all 0.3s ease !important;
}

#add-items-modal .close:hover {
    color: #fff !important;
    opacity: 1 !important;
    transform: rotate(90deg) !important;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    #add-items-modal .modal-dialog {
        width: calc(100% - 40px) !important;
        max-width: none !important;
        right: 20px !important;
        left: 20px !important;
        top: 80px !important;
        bottom: 20px !important;
    }
    
    #floor-items-wrapper,
    #wall-items-wrapper,
    #in-wall-items-wrapper {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 600px) {
    #add-items-modal .modal-dialog {
        width: calc(100% - 20px) !important;
        right: 10px !important;
        left: 10px !important;
        top: 70px !important;
    }
    
    #floor-items-wrapper,
    #wall-items-wrapper,
    #in-wall-items-wrapper {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        padding: 8px !important;
    }
    
    .catalog-item-card .thumb-container {
        height: 80px !important;
    }
    
    .catalog-item-card .caption h3 {
        font-size: 10px !important;
    }
}

/* dat.GUI Label Visibility Perfection */
.dg .property-name {
    flex: 1 !important;
    min-width: 0 !important;
    padding: 0 20px !important;
    font-size: 13px !important;
    color: #e0faff !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

.dg .c {
    flex: 0 0 160px !important;
    width: 160px !important;
    padding-right: 20px !important;
}

.dg .cr {
    min-height: 52px !important;
}

.dg .folder .title {
    padding: 15px 20px !important;
    font-size: 13px !important;
}

/* Phase 4: Collision warning animation */
@keyframes pulse-warning {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(1.02); }
}

/* ============================================
   LOADING SPINNER (New for v0.2.0)
   ============================================ */
.loading-spinner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(0, 210, 210, 0.15);
    border-radius: 8px;
    border: 1px solid rgba(0, 210, 210, 0.3);
    margin: 8px 0;
}

.loading-spinner .spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 210, 210, 0.3);
    border-top-color: #00d2d2;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-spinner .loading-text {
    color: #5fffea;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   RESPONSIVE BREAKPOINTS (New for v0.2.0)
   ============================================ */

/* Tablet (max-width: 1100px) */
@media (max-width: 1100px) {
    #app-shell {
        grid-template-columns: 280px 1fr;
    }
    
    .project-fields {
        grid-template-columns: 1fr 1fr;
    }
    
    .docked-modal .modal-dialog {
        width: 380px !important;
    }
}

/* Mobile Landscape (max-width: 900px) */
@media (max-width: 900px) {
    #app-shell {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    #side-panel {
        order: 2;
        max-height: 200px;
        overflow-y: auto;
    }
    
    #main-panel {
        order: 1;
        min-height: 400px;
    }
    
    #tool-rail {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .rail-section {
        min-width: 150px;
        flex: 1;
    }
    
    #planner-stage .card {
        min-height: 260px;
    }
    
    .docked-modal .modal-dialog {
        position: fixed;
        right: 8px;
        top: 180px;
        bottom: 8px;
        width: calc(100% - 16px) !important;
    }
    
    .project-fields {
        grid-template-columns: 1fr;
    }
    
    .project-buttons {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Portrait (max-width: 600px) */
@media (max-width: 600px) {
    h1 {
        font-size: 16px;
        padding: 6px 10px;
    }
    
    #app-shell {
        padding: 8px;
    }
    
    #side-panel {
        max-height: 150px;
    }
    
    .rail-section {
        min-width: 100px;
    }
    
    .tool-text {
        display: none;
    }
    
    .btn-lg {
        padding: 12px;
        font-size: 10px;
    }
    
    .project-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tips-popup {
        top: 100px;
        left: 8px;
        right: 8px;
    }
}

/* ============================================
   TEMPLATES MODAL (New for v0.2.0)
   ============================================ */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.template-card {
    background: #080e14f5;
    border: 1px solid rgba(0, 210, 210, 0.25);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.template-card:hover {
    border-color: #5fffea;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 210, 210, 0.2);
}

.template-card h4 {
    color: #5fffea;
    margin: 0 0 8px 0;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.template-card p {
    color: #9fd0e6;
    font-size: 12px;
    margin: 0;
    line-height: 1.4;
}

.template-preview {
    width: 100%;
    height: 120px;
    background: #0a121a;
    border-radius: 8px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #00d2d2;
}

/* ============================================
   MEASUREMENT TOOLS (New for v0.2.0)
   ============================================ */
.measurement-panel {
    background: #080e14f5;
    border: 1px solid rgba(0, 210, 210, 0.25);
    border-radius: 12px;
    padding: 16px;
    margin: 12px;
}

.measurement-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 210, 210, 0.1);
}

.measurement-row:last-child {
    border-bottom: none;
}

.measurement-label {
    color: #9fd0e6;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.measurement-value {
    color: #5fffea;
    font-size: 16px;
    font-weight: 700;
    font-family: 'Aldrich', sans-serif;
}

.measure-tool-btn {
    width: 100%;
    margin: 8px 0;
    padding: 12px;
    background: linear-gradient(120deg, #0c1e24f2, #071018f2);
    border: 1px solid rgba(0, 210, 210, 0.3);
    color: #e6f6ff;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.measure-tool-btn:hover {
    border-color: #5fffea;
    background: linear-gradient(120deg, #0f2430f2, #0a1820f2);
}

.measure-tool-btn.active {
    border-color: #5fffea;
    background: rgba(0, 210, 210, 0.2);
    box-shadow: 0 0 15px rgba(0, 210, 210, 0.3);
}

/* ============================================
   FIRST-TIME TUTORIAL (New for v0.2.0)
   ============================================ */
.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutorial-modal {
    background: linear-gradient(135deg, #0a1820 0%, #051018 100%);
    border: 2px solid #00d2d2;
    border-radius: 16px;
    padding: 32px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 210, 210, 0.3);
}

.tutorial-modal h2 {
    color: #5fffea;
    font-size: 24px;
    margin: 0 0 16px 0;
    text-align: center;
}

.tutorial-modal p {
    color: #9fd0e6;
    font-size: 14px;
    line-height: 1.6;
    margin: 12px 0;
}

.tutorial-step {
    display: flex;
    gap: 16px;
    margin: 20px 0;
    padding: 16px;
    background: rgba(0, 210, 210, 0.1);
    border-radius: 8px;
    border-left: 4px solid #00d2d2;
}

.tutorial-step-number {
    width: 32px;
    height: 32px;
    background: #00d2d2;
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.tutorial-step-content {
    flex: 1;
}

.tutorial-step-content h4 {
    color: #e6f6ff;
    margin: 0 0 8px 0;
    font-size: 16px;
}

.tutorial-step-content p {
    color: #9fd0e6;
    font-size: 13px;
    margin: 0;
}

.tutorial-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    justify-content: center;
}

.tutorial-btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.tutorial-btn-primary {
    background: linear-gradient(120deg, #00d2d2, #5fffea);
    color: #000;
}

.tutorial-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 210, 210, 0.4);
}

.tutorial-btn-secondary {
    background: transparent;
    border: 1px solid rgba(0, 210, 210, 0.4);
    color: #9fd0e6;
}

.tutorial-btn-secondary:hover {
    border-color: #5fffea;
    color: #e6f6ff;
}

.tutorial-progress {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 16px;
}

.tutorial-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(0, 210, 210, 0.3);
    transition: all 0.3s ease;
}

.tutorial-dot.active {
    background: #00d2d2;
    transform: scale(1.2);
}